[Bug 1262910] [NEW] Ubiquity crashes if I uncheck format option from "Something Else"

[Sergio Benjamim]

Public bug reported:

Ubiquity crashes if I uncheck format option from "Something Else"
advanced install option.

Steps to reproduce:

1. I created in Gparted: 
    Partition Table in MBR (msdos), NON-EFI system
    /dev/sda1 -- 1024 MiB EXT4
    /dev/sda2 -- 30 GiB Btrfs
    /dev/sda3 -- 205 GiB Btrfs
    /dev/sda4 -- 4 GiB linux-swap
2. Opens Ubiquity for install
3. Select "Something Else" in Installation Type
4. Double click in sda2 partition, Use as: "Ext4 journaling file system", Mount Partition: /, and click OK
5. Partition will be marked to formatting, so double click it again, and change to "btrfs journaling file system", unselect Format option and click OK
6. Partition will still be marked to formatting, so uncheck format columm
7. Ubiquity will crash

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.17.2
ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
Uname: Linux 3.12.0-7-generic x86_64
ApportVersion: 2.12.7-0ubuntu2
Architecture: amd64
CasperVersion: 1.336ubuntu1
Date: Thu Dec 19 22:45:50 2013
InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131219)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty ubiquity-2.17.2

** Attachment added: "_usr_lib_ubiquity_bin_ubiquity.0.crash"
   https://bugs.launchpad.net/bugs/1262910/+attachment/3932856/+files/_usr_lib_ubiquity_bin_ubiquity.0.crash

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https://bugs.launchpad.net/bugs/1262910

Title:
  Ubiquity crashes if I uncheck format option from "Something Else"

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  Ubiquity crashes if I uncheck format option from "Something Else"
  advanced install option.

  Steps to reproduce:

  1. I created in Gparted: 
      Partition Table in MBR (msdos), NON-EFI system
      /dev/sda1 -- 1024 MiB EXT4
      /dev/sda2 -- 30 GiB Btrfs
      /dev/sda3 -- 205 GiB Btrfs
      /dev/sda4 -- 4 GiB linux-swap
  2. Opens Ubiquity for install
  3. Select "Something Else" in Installation Type
  4. Double click in sda2 partition, Use as: "Ext4 journaling file system", Mount Partition: /, and click OK
  5. Partition will be marked to formatting, so double click it again, and change to "btrfs journaling file system", unselect Format option and click OK
  6. Partition will still be marked to formatting, so uncheck format columm
  7. Ubiquity will crash

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubiquity 2.17.2
  ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
  Uname: Linux 3.12.0-7-generic x86_64
  ApportVersion: 2.12.7-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.336ubuntu1
  Date: Thu Dec 19 22:45:50 2013
  InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  LiveMediaBuild: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131219)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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